CVE-2026-12610
mediumA flaw was found in sssd.
Vendor / product: Fedoraproject — sssd
A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.
CVSS
6.4
6.4 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-06-30 10:16
Modified: 2026-11-04 11:17
NVD status: Undergoing Analysis
Last synced 16 hours ago
Verified against the source API 2026-11-04 11:31 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
fedoraproject / sssd all versions
redhat / enterprise_linux 8.0, 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-12610
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2490288
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-12610
Patch / mitigation: https://github.com/SSSD/sssd/issues/8796
References
- https://access.redhat.com/security/cve/CVE-2026-12610 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2490288 secalert@redhat.com
- https://github.com/SSSD/sssd/issues/8796 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 11:31 UTC · record ↗